Heating system.



No. 889,382. PATENTED JUNE 2, 1908.

J. J. LAWLER.

HEATING SYSTEM.

APPLIOATION FILED MAR. 18, 190').

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'3. J. LAWLER HEATING SYSTEM APPLICATION FILED MAR. 18, 1907.

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JAMES J. LAWLER, or MOUNT VERNON, NEW YORK,

swarms SYSTEM.

To all wiw'm ti may concern: r

Be it known that 1, James J. LAWLER, a

citizen of the United States, and resident of 'vide a system by which itis possible to operate said apparatus under, a partial vacuum or aboveatmospheric pressurej second to secure a perfect circulation of thesteam through the system without the use of air valves on the radiators;third,-to dispense with the use of ejectors, pumps, vacuurn tanks orother auxiliary power to 'se cure circulation; and fourth, a automaticcontrol or regulation 0 the supply ofsteam to the radiators as well asthe automatic discharge of air from the heating system.

My invention is fully shown in the accompanying drawings, in whichFigure 1 is a diagrammatic view of a small heating system in abuiliding; Fig. 2 is an enlarged detail view of the thermostat regu,

lator connected up with the single air valve used, the valve beingclosed, and Fig. 3 is an enlarged view of the said air valve andoperative connection, the valve being 0 en.

The generator may be a steam boi or 1 of any ordinary construction.

The steam supply 2 is at the usual point of outlet of the boiler andbranches out in several directions connected with the. main .riscrswhich feed the heaters, herein shown sake of clearness of the drawing. Acheck valve 8 on the return pipe is placed near the boiler as usual.

9 is an automatic constant level water feed, which I prefer to use,though its use forms no part of the present invention.

The boiler has the usual furnace door 10 f5:pecifwation' of LettersPatent. Application filed March 18, 1907. Serial No 362,865.

erfect and Patented June 2, recs.

and a horizontally suspended draft door; Hfhaving an extending arm 12bywhich it may be opened or closed. Above andfad'acentj to the boiler..at a suitable. point lrpiaceai thermostat regulator f 0 r which Lettersf Patent were granted to me on July 10,1906, No. 825,328, and which Iwillbriefly describe as-follows, reference being had to Fig.,'2f thedrawings, 5'1,

A brass or other suitable metallictube L3 1 is screwed between twofittings 14-:15 prov:

vided with threads at opposite ends to con: nect said fittings with theair discharge pipe:

16 which is connected to the returnipe- 7l These two fittings areprovided wit webs N l? at diametrically oppoeiteeidee into which theflatends of the arms closely fit and: articu late;.a bolt acts as a pivotalbearing.

The arms 181920-2-1 are cruciform in .75

cross section for the purpose of making them,-

light and rigid. All of the four armslare of, I

exactly the same length, two being con nected with each other by aknuckle joint as shown, and, when thus connected each set. o'rljfifipainof arms. form an obtuse ajngle on, each.

side'of the tube 13. One arm 19 is rovid'e'd with a flattened disk 22perforate I ior the passage of a screw or bolt 23 which connects withtwobolt 27. 28 is a link which two curved straps 24 to said arm. ArmZQS hasan outwardly extending lug 25 provided is' connected to; the

25 to form a knuckle joint. with thefltwo ,90

curved straps 24 to which it is connected by a bolt 29. The link-28 hasan extension 30 upon which a lever 31is mountedsaid extensionterminating some distance fronrtlie lever in an eye or flat perforateddisk 32,

this extension of the link being a departure from the said LettersPatent mentioned hereinbefore; and for the purpose of reventing anypossible lateral movement in tlie tube 13, I provide a thin tubularjacket 33 made in" halves and fitting snugly on the tube To I provide adouble regulation means, I extend the link 28, as described, so; as toconnect it with a turn buckle 34 by means of the con: necting rod 35upon which the turn buckle; is adjustable. A screw or bolt 35' connectsrod 35 withthe link extension; the other end:

of the turnbuckle has a slidin fit with the rod 36. ,Upon this latterrod ffasten a disk 37 at a suitable point for the purpose of ai fordinga shoulder for the spring 38, which spring at its other end has abearing in the jair outlet valve 39, and also afiords a bearing for oneend of the spring 40 which presses outwardly ,against the turnbuckle..These' two springs are bf d fferent tension, the one seatmg m the valve39 being the weaker of the two for the purpose hereinafter set forth.

The rod-36 isof sufiicient length to extend into the air valve asuitable "distance so that whenpressed forward by the turn-buckle andspring 40, the point of it will press against the clapper 41.

The air valve 39 is connected with the thermostaticregulator as shown; Iprefer to give rigidity to the air valve by using a blind bushing orplug 42 in a T 43', which bushing 1s screwed upon-a pipe 44 fastenedtothe ceiling or other sup ort by means of a flan e 45, thou h it isobvlousthat any other simp e "way of eepin the air valve in an uprightwater of condensation will enter it.

f The air valve 39 is recessed, at 46, for the spiral spring 38, aperforated wall 47 afford-- ing a bearing for the rod 36. The clapper 41may be of ordinary construction, but prefer to countersink it on theback on a line with the rod 36 so that when said rod is ressed againstthe clapper to close it tighiil the pressure will be at right angles. 48is t e cap or the air valve.

49 is the valve seat. 50 is the outlet. The free endof the door 0erating lever 31 is adjustably connected wit a flat metal strip 51having a series of perforations 52 adapted to be engaged by a pin 530ithe lever. A chain 54 connects the flat stri with the extension arm 12on the draft oor.

Such being the construction the o eration is as follows; Before startingfire in t e boiler the lever 31 on thermostat re ulator is connected bychain to the draft *oor extension 12' of the boiler, and holding thesame in an "open position while the clapper of the air valve 39 is freeto act the turn buckle being regulated so that the point of rod 36 doesnot touch it. The thermostat re ulator and air valve being connected ont e end of the "main return from all the radiators, there can be noaction in the regulator until steam'has passed, through one or more ofthe radiators and filled also the main return pipe. As the steam leavesthe boiler, it flows through the vari'ous'supply'pi e and risers, and,forcing the air 'cQntaine in the ipes before it 'throu hthe radiatorsand into the return oin which it' escape's through air discharge pipe1'9 air valve 39. Afterthe lines 'keeps 1t positivel season steam hasfilled the mains and such radiator. that is in use, it moves to the airoutlet valve 39, but before the steam has completely overcome theatmospheric pressure by esca ing from valve 39 its heat acts on the tube13 of the regulator, which expands and causes the-"arms to move towardsthe center or inward whereby the lever 31 is actuated by the strap arms24 pushing outward against the lever link 28 at bottom, the armsimultaneously pulling the upper end of said link inward, thus producinga compound lever movement whichcauses the free end of the lever 31 to belowered. This movement closes the draft door 11 and also causes theturnbuckle to be pressed inward a ainst the spring 40 and indirectly aainst t e rod 36 which, pressing against t e' clap er valve closedagainst the. escape of steam and sea ing the system against atmosphericpressure yet permitting a further and inde endent movement of the lever31 the heating system by the steam, the appa-f e desired. As the steamis con-- i ratus can be run under artial vacuum, and

the draft door on the oiler can be'so adjusted as to maintain thedesired temperature below 212 degrees, while it can also be adjusted bymeans of the flat strip adjustment on the lever 31 and chain to o erateunder steam pressure above that of t e atmosphere at times when atemperature of more than 212 de ees is desired,-as in the case of severeco d weather,the lever 31 being free to'move from increased temperatureof thermostat tube.

When another radiator is turned on, the air is forced out by theadvancing steam through the return pi es to the thermostat re latorwhere it is ed, and owing to the di erence in temperature the tube 13contracts, the arms are pushed outward causing the link and itsextension and connections to travel away from the air check valve whichis then free to open to the escaping air. When the pipes are freed andthe steam passes through the tube of the thermostat regulator, it againexpands and seals the system in the same manner as hereinbeforedescribed. If however there is an increased demand for steam in thesystem, byjreason of additional radiators being.

turned on, the temperature will lower in return pipes and thereby allowthe thermostatic tube to cool andcontract. resultm a ain in 'o enin thedraft door to fire an a owing t e boi er to supply the extra nec--essary amount of steam.

. It will be seen from the foregoing description, that the leveroperating'the door and the link operatingthe air check valve, actsimultaneously and in unison, one however ssasss;

so that the draft door can-be 0pei'1ed or closed and oontinuegi. ineither position with 1 having a muoh greatertrayel thanIthe-cither, I

o Ewing now f lly deseribed'my invention what I desire to secure byLetters Patent is: 1. In "a steam heating system, a steam generator, adraft door therefor, a radiator, a

' .stearnsupply pipe and a return pipe both in;

- mostatio device interposed therein adapteki to he operat'edhy steamiitheair discharge pipe, an ai'r valve' arranged to 'oontrol the passage,through. the air- (iisoharg'e :vpip'e means, connectedto --.-a n ieiabie by: sin

communication with the generator and radi-, atom-and an air dischargepipe'in oonimuni-'- Cation withsaid return pipehavingafthertherein'ad'apt'ed to be operated by steam iii said airdischarge pi e, a normaliy open air. {outlet waive arrange to controlthe assage xghrou h said air d1scharge-pipe,-' an means -opera lethrough the medium of saidtherthermostatic device fo operating 'the'saiddraft door anti" regulat the draft to" the generator and oiosmgsai'"airvaive;

In 'a'steam'heati ""system,'-fa steam "generator; 'a area Control ingdoor therefor,- a

radiato a pipe'arid a return pipe es- 'tabiiehixig. oii'ouit betweenthergenerator rminioatio with the return" pipe, thermo--\..

valye in communication with the return pi e, and. a thermostaticregulator acting rin er the action oi'steam to close'the air outlet'ancitheaiifogtiet vaive, anci meaiisoporated by said thermostatio devce for cios ng the and the radi or; an air outlet valve in tomstatiodeyi interposed between the radiator air valve and similtaneouslyo erating the draft door for regulating the dis t of the genvI orator when the retumpipe' is freed of airi' 3, 111 'a-steam heatinsystem, a steam generatonaciraft centroliing door-therefor, a. steamradiator, a supply pipe and a ma'1n're pi 'e' having a thermostaticdevice there n y a apted tob i "operated by steam in the an trim pipeestablishi generator and the ra iator, an air discharge a circuitbetween the d l a P g charge e, anair outlet val vefarran ed to oontrol't gipe' the said thermostatic device in the I airpassage through said.air 3- soharge pipe acting in its ex ansion and oo'ntraotion toautomatically 0 ose the air outlet valve when the return pipevhas 1regulate the draft of the generator.

return pipe establishing a circuit between the generatorand-theradiator, an'air dischargepipe having a thermostatic deviceinterposed lioeen freed of air and simultaneously operate the draft doorto system, a steam 1 v inostatic device and acting simultaneously 1 toclose the' airo'utlet valve and operate the draft door to regulate thedraft of the Steam g ei'ator, v

.5. In a stearn .lieating system; a-steaingenerat ons draftdoor-therefor; and a steam generator and' the radiator, an air outletvalve and simultaneously'o erate the draft door to regulate the draft 0the generator.

' .Signeci at New .York-.'city in the county of. v New York and State ofNew York this 14th. D. 19Q7. t p v JAMES-J. AWLER; Witnesses:

I CHARLEsJV. Dwrira;v

EDGAR M. GREENBAUM.

day of March A.

